Re: Re-infecting partner with HSV-1
To shed some light on this: I have genital HSV1 and oral HSV1. I have only ever had one genital HSV1 outbreak, the initial one from my genital infection aged 23. I have had cold sores since I was a child and get 1 or 2 a year.
YES it is possible to reinfect your gf in the genital area - it happened to me!!! BUT I think the risk is MUCH MUCH higher where there is an active sore. I can't give you science but I can tell you my experience.
My previous gf had HSV1, but didn't get cold sores. I did, but we avoided oral sex when I had an OB. We had a lot of oral sex when I didn't have an OB! Neither of us ever had any problems in the genital area.
I met my new gf and she performed oral sex on me whilst a cold sore was on her upper lip. I have to say, I did not see it at the time or I would have protested, bearing in mind how careful I was with my previous gf, I could not believe it when we woke up the next morning and I saw the sore on her lip!! Unfortunately she did not have any idea herpes could be passed on in this way. I forgive her because she's a great person and she made one mistake. Plus, I have only had the one OB which I am sure has helped my positive attitude towards her!!
All those times I had oral sex with another person with HSV1, no problem, but as soon as there was an active sore, I get infected! It's not so bad seeing as I only had the original outbreak as far as I know (I have been checking the area every day for the past year but no problems).
Yeast infections can and do often occur simultaneously with genital herpes outbreaks, so the lips swelling could be neither, either, or both. Best to get it checked out by a doctor if she is concerned.